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OUTLINE DRAWING
CONNECTION DIAGRAM
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOKTM
www.pwrx.com Dual SCR Isolated Module
250 Amperes / Up to 1600 Volts
Revision Date: 05/17/2010
ND43__25
CONNECTION DIAGRAM
A
K2
G2
G1
K1
KAK
SCR 1
SCR 2
M K
G
A
B
N
R
V
T - M8 THD. (3 TYP.)
U - DIA. (4 TYP.)
OUTLINE DRAWING
A
K
AK
J
C
S
P
Q
F
H
W
L
DE
G2
K2
W
G1
K1
ND43 Outline Dimensions
Dimension Inches Millimeters
A 4.57 116
B 3.66 93
C 3.15 80.0
D 2.17 55.1
E 2.06 52.3
F 2.07 52.0
G 1.97 50.0
H 1.90 48.3
J 1.50 38.1
K 1.38 35.0
L 1.26 32.0
M 1.122 28.5
N .71 18.0
P .57 14.5
Q .625 15.9
R .394 10.00
S .350 8.9
T M8 Metric M8
U .250 Dia. 6.35 Dia.
V .110 x .032 2.8 x 0.8
W .12 3.0
Note: Dimensions are for reference only.
ND43__25
Dual SCR Isolated
POW-R-BLOKTM Module
250 Amperes / Up to 1600 Volts
Ordering Information:
Select the complete eight digit
module part number from the table
below.
Example: ND431625 is a 1600Volt,
250 Ampere Dual SCR Isolated
POW-R-BLOKTM Module
Type
Voltage
Volts
(x100)
Current
Amperes
(x 10)
ND43 06
08
10
12
14
16
25
Description:
Powerex Dual SCR Modules are
designed for use in applications
requiring phase control and isolated
packaging. The modules are isolated
for easy mounting with other
components on a common heatsink.
POW-R-BLOKTM has been tested and
recognized by the Underwriters
Laboratories.
Features:
Electrically Isolated Heatsinking
Aluminum Nitride Insulator
Compression Bonded Elements
Metal Baseplate
Low Thermal Impedance
for Improved Current Capability
Quick Connect Gate Terminal
with Provision for Keyed Mating
Plug
UL Recognized
Benefits:
No Additional Insulation
Components Required
Easy Installation
No Clamping Components
Required
Reduce Engineering Time
Applications:
Bridge Circuits
AC & DC Motor Drives
Battery Supplies
Power Supplies
Large IGBT Circuit Front Ends
my!
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOKTM
www.pwrx.com Dual SCR Isolated Module
250 Amperes / Up to 1600 Volts
Revision Date: 05/17/2010
ND43__25
Absolute Maximum Ratings
Characteristics Conditions Symbol Units
Repetitive Peak Forward and Reverse Blocking
Voltage
V
DRM & VRRM up to 1600 V
Non-Repetitive Peak Reverse Blocking Voltage
(t < 5 msec)
V
RSM 1600 V
RMS Forward Current 180° Conduction, TC=89°C IT(RMS)
393
A
A
verage Forward Current 180° Conduction, TC=89°C IT(AV) 250 A
Peak One Cycle Surge Current, Non-Repetitive 60 Hz, 100% VRRM reapplied ITSM 8800 A
Peak Three Cycle Surge Current, Non-Repetitive 60 Hz, 100%VRRM reapplied ITSM 4685 A
Peak Ten Cycle Surge Current, Non-Repetitive 60 Hz, 100% VRRM reapplied ITSM 4040 A
I2t for Fusing for One Cycle, 8.3 milliseconds I2t 322,000 A2 sec
Maximum Rate-of-Rise of On-State Current,
(Non-Repetitive)
Tj=25°C, IG=500mA,
VD=0.67 VDRM (Rated), ITM=π IT(AV),
T
r
< 0.5µs, t
p
> 6µs
di/dt 800 A/µs
Peak Gate Power Dissipation PGM 16 W
A
verage Gate Power Dissipation PG(AV) 3 W
Peak Forward Gate Current IGFM 4 A
Peak Forward Gate Voltage VGFM 10 V
Peak Reverse Gate Voltage VGRM 5 V
Operating Temperature TJ -40 to +130 °C
Storage Temperature Tstg -40 to +150 °C
Max. Mounting Torque, M6 Mounting Screw 45
5
in.-Lb.
Nm
Max. Mounting Torque, M8 Terminal Screw 110
12
in.-Lb.
Nm
Module Weight, Typical 840 g
1.85 lb
V Isolation @ 25C Vrms 2500 V
om
A (Lem-m
t4
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOKTM
www.pwrx.com Dual SCR Isolated Module
250 Amperes / Up to 1600 Volts
Revision Date: 05/17/2010
ND43__25
Electrical Characteristics, TJ=25°C unless otherwise specified
Characteristics Symbol Test Conditions Min. Max.
Units
Repetitive Peak Forward Leakage Current IDRM Up to 1600V, TJ=130°C 50 mA
Repetitive Peak Reverse Leakage Current IRRM Up to 1600V, TJ=130°C 50 mA
Peak On-State Voltage VFM I
TM=625A 1.30 V
Threshold Voltage, Low-level
Slope Resistance, Low-level
V(TO)1
rT1
TJ = 130°C, I = 15%IT(AV) to πIT(AV) 0.819
0.589
V
mΩ
Threshold Voltage, High-level
Slope Resistance, High-level
V(TO)2
rT2
TJ = 130°C, I = πIT(AV) to ITSM 0.47
0.731
V
mΩ
VTM Coefficients, Full Range
TJ = 130°C, I = 15%IT(AV) to ITSM
VTM = A+ B Ln I +C I + D Sqrt I
A =
B =
C =
D =
0.5849
0.1060
9.25 E-4
-0.0286
Minimum dV/dt dV/dt Exponential to 2/3 VDRM
Tj=130°C, Gate Open
500 V/µs
Turn-On Time (Typical) ton I
TM = 100A, VD = 100V 7 (Typical) µs
Turn-Off Time (Typical) t off T
J = 130°C, I T= 250A
Re-Applied dV/dt = 20V/µs
Linear to 0.8 VDRM
150 (Typical) µs
Gate Trigger Current IGT T
j=25°C, VD=12V 150 mA
Gate Trigger Voltage VGT T
j=25°C, VD=12V 3.0 Volts
Non-Triggering Gate Voltage VGDM T
j=130°C, VD= ½ VDRM 0.15 Volts
Thermal Characteristics
Characteristics Symbol
Max. Units
Thermal Resistance, Junction to Case
RΘJ-C Per Module, both conducting
Per Junction both conducting
0.07
0.14
°C/W
°C/W
Thermal Impedance Coefficients
ZΘJ-C Z
ΘJ-C= K1 (1-exp(-t/τ1))
+ K2 (1-exp(-t/τ2))
+ K3 (1-exp(-t/τ3))
+ K4 (1-exp(-t/τ4))
K1 = 5.27E-3
K2 = 1.17E-2
K3 = 5.26E-2
K4 = 6.97E-2
τ1 = 1.69E-4
τ2 = 2.07E-2
τ3 = 2.37E-1
τ4 = 2.46
Thermal Resistance, Case to Sink Lubricated RΘC-S Per Module 0.03 °C/W
my!
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOKTM
www.pwrx.com Dual SCR Isolated Module
250 Amperes / Up to 1600 Volts
Revision Date: 05/17/2010
ND43__25
Maximum On-State Forward Voltage Drop
0.00
1.00
2.00
3.00
4.00
5.00
10 100 1000 10000
Instantaneous On-State Current - Itm - Amperes
On-State Voltage - Vtm - Volts
( Tj = 130 °C )
ED41N
Maximum Transient Thermal Impedance
0
0.02
0.04
0.06
0.08
0.1
0.12
0.14
0.001 0.01 0.1 1 10 100
Time - t - Seconds
Thermal Impedance - Rjc - °C/W
(Junction to Case, Per SCR)
0180 360
CONDUCTION ANGLE
Maximum On-State Power Dissipation
15°
30°
60°
90°
120° 180°
0
50
100
150
200
250
300
0 50 100 150 200 250 300
Average On-State Current - It(av) - Amperes
Max. Power Dissipation Per SCR - Watts
(Sinusoidal Waveform)
0180 360
CONDUCTION ANGLE
Maximum Allowable Case Temperature
120°
90°
60°
30°
15°
180°
80
85
90
95
100
105
110
115
120
125
130
0 50 100 150 200 250 300
Average On-State Current - It(av) - Amperes
Max. Case Temperature - Tcase -°
C
(Sinusoidal Waveform)
0180 360
CONDUCTION ANGLE
Maximum On-State Power Dissipation
90°
60°
30°
120°
180°
270°
15°
360°
0
50
100
150
200
250
300
350
400
0 50 100 150 200 250 300 350 400 450
Average On-State Current - It(av) - Amperes
Max. Power Dissipation Per SCR - Watts
(Rectangular Waveform)
0180 360
CONDUCTION ANGLE
Maximum Allowable Case Temperature
270°
180°
120°
90°
60°
30°
15°
360°
70
80
90
100
110
120
130
0 50 100 150 200 250 300 350 400 450
Average On-State Current - It(av) - Amperes
Max. Case Temperature - Tcase -°C
(Rectangular Waveform)
my!
Powerex, Inc., 173 Pavilion Lane, Youngwood, Pennsylvania 15697 (724) 925-7272 POW-R-BLOKTM
www.pwrx.com Dual SCR Isolated Module
250 Amperes / Up to 1600 Volts
Revision Date: 05/17/2010
ND43__25
Six-Pulse Bridge Circuit Total Power Dissipation & Maximum Rated Output Current With Sink to Ambient
Resistance of Heatsink as a Parameter.
Total Power Dissipation vs Maximum Rated Output Current
0
200
400
600
800
1000
1200
1400
1600
1800
2000
0 100 200 300 400 500 600 700 800
Maximum Bridge Output Current (A)
0
200
400
600
800
1000
1200
1400
1600
1800
2000
Total Power Dissipation (W)
Powerex ND43--25 Pow-R-Blok 6-Pulse Bridge
0
200
400
600
800
1000
1200
1400
1600
1800
2000
10 30 50 70 90 110 130
Ambient Temperature (C)
Total Power Dissipation (W)
0.30
0.20
0.15
0.12
0.10
0.08
0.06
0.05
0.04
0.03
0.025 0.02 0.015 0.01 Rth S-A (C/W)